2 This file is part of GNUnet.
3 (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file fs/gnunet-download.c
22 * @brief downloading for files on GNUnet
23 * @author Christian Grothoff
24 * @author Krista Bennett
25 * @author James Blackwell
26 * @author Igor Wronsky
29 #include "gnunet_fs_service.h"
35 static int delete_incomplete;
37 static const struct GNUNET_CONFIGURATION_Handle *cfg;
39 static struct GNUNET_FS_Handle *ctx;
41 static struct GNUNET_FS_DownloadContext *dc;
43 static unsigned int anonymity = 1;
45 static unsigned int parallelism = 16;
47 static unsigned int request_parallelism = 4092;
49 static int do_recursive;
51 static char *filename;
53 static int local_only;
56 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
64 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
66 struct GNUNET_FS_DownloadContext *d;
72 GNUNET_FS_download_stop (d, delete_incomplete);
78 * Called by FS client to give information about the progress of an
82 * @param info details about the event, specifying the event type
83 * and various bits about the event
84 * @return client-context (for the next progress call
85 * for this operation; should be set to NULL for
86 * SUSPEND and STOPPED events). The value returned
87 * will be passed to future callbacks in the respective
88 * field in the GNUNET_FS_ProgressInfo struct.
91 progress_cb (void *cls, const struct GNUNET_FS_ProgressInfo *info)
98 case GNUNET_FS_STATUS_DOWNLOAD_START:
100 fprintf (stderr, _("Starting download `%s'.\n"),
101 info->value.download.filename);
103 case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
106 s = GNUNET_STRINGS_relative_time_to_string (info->value.download.eta);
107 t = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed *
109 (info->value.download.
110 duration.rel_value + 1));
112 _("Downloading `%s' at %llu/%llu (%s remaining, %s/s)\n"),
113 info->value.download.filename,
114 (unsigned long long) info->value.download.completed,
115 (unsigned long long) info->value.download.size, s, t);
120 case GNUNET_FS_STATUS_DOWNLOAD_ERROR:
121 fprintf (stderr, _("Error downloading: %s.\n"),
122 info->value.download.specifics.error.message);
123 GNUNET_SCHEDULER_shutdown ();
125 case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
126 s = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed * 1000 /
127 (info->value.download.
128 duration.rel_value + 1));
129 fprintf (stdout, _("Downloading `%s' done (%s/s).\n"),
130 info->value.download.filename, s);
132 if (info->value.download.dc == dc)
133 GNUNET_SCHEDULER_shutdown ();
135 case GNUNET_FS_STATUS_DOWNLOAD_STOPPED:
136 if (info->value.download.dc == dc)
137 GNUNET_SCHEDULER_add_continuation (&cleanup_task, NULL,
138 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
140 case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
141 case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
144 fprintf (stderr, _("Unexpected status: %d\n"), info->status);
152 * Main function that will be run by the scheduler.
155 * @param args remaining command-line arguments
156 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
157 * @param c configuration
160 run (void *cls, char *const *args, const char *cfgfile,
161 const struct GNUNET_CONFIGURATION_Handle *c)
163 struct GNUNET_FS_Uri *uri;
165 enum GNUNET_FS_DownloadOptions options;
169 fprintf (stderr, _("You need to specify a URI argument.\n"));
172 uri = GNUNET_FS_uri_parse (args[0], &emsg);
175 fprintf (stderr, _("Failed to parse URI: %s\n"), emsg);
180 if ((!GNUNET_FS_uri_test_chk (uri)) && (!GNUNET_FS_uri_test_loc (uri)))
182 fprintf (stderr, _("Only CHK or LOC URIs supported.\n"));
184 GNUNET_FS_uri_destroy (uri);
187 if (NULL == filename)
189 fprintf (stderr, _("Target filename must be specified.\n"));
191 GNUNET_FS_uri_destroy (uri);
196 GNUNET_FS_start (cfg, "gnunet-download", &progress_cb, NULL,
197 GNUNET_FS_FLAGS_NONE,
198 GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM, parallelism,
199 GNUNET_FS_OPTIONS_REQUEST_PARALLELISM,
200 request_parallelism, GNUNET_FS_OPTIONS_END);
203 fprintf (stderr, _("Could not initialize `%s' subsystem.\n"), "FS");
204 GNUNET_FS_uri_destroy (uri);
208 options = GNUNET_FS_DOWNLOAD_OPTION_NONE;
210 options |= GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE;
212 options |= GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY;
213 dc = GNUNET_FS_download_start (ctx, uri, NULL, filename, NULL, 0,
214 GNUNET_FS_uri_chk_get_file_size (uri),
215 anonymity, options, NULL, NULL);
216 GNUNET_FS_uri_destroy (uri);
219 GNUNET_FS_stop (ctx);
223 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
229 * The main function to download GNUnet.
231 * @param argc number of arguments from the command line
232 * @param argv command line arguments
233 * @return 0 ok, 1 on error
236 main (int argc, char *const *argv)
238 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
239 {'a', "anonymity", "LEVEL",
240 gettext_noop ("set the desired LEVEL of receiver-anonymity"),
241 1, &GNUNET_GETOPT_set_uint, &anonymity},
242 {'D', "delete-incomplete", NULL,
243 gettext_noop ("delete incomplete downloads (when aborted with CTRL-C)"),
244 0, &GNUNET_GETOPT_set_one, &delete_incomplete},
245 {'n', "no-network", NULL,
246 gettext_noop ("only search the local peer (no P2P network search)"),
247 1, &GNUNET_GETOPT_set_uint, &local_only},
248 {'o', "output", "FILENAME",
249 gettext_noop ("write the file to FILENAME"),
250 1, &GNUNET_GETOPT_set_string, &filename},
251 {'p', "parallelism", "DOWNLOADS",
253 ("set the maximum number of parallel downloads that is allowed"),
254 1, &GNUNET_GETOPT_set_uint, ¶llelism},
255 {'r', "request-parallelism", "REQUESTS",
257 ("set the maximum number of parallel requests for blocks that is allowed"),
258 1, &GNUNET_GETOPT_set_uint, &request_parallelism},
259 {'R', "recursive", NULL,
260 gettext_noop ("download a GNUnet directory recursively"),
261 0, &GNUNET_GETOPT_set_one, &do_recursive},
262 {'V', "verbose", NULL,
263 gettext_noop ("be verbose (print progress information)"),
264 0, &GNUNET_GETOPT_increment_value, &verbose},
265 GNUNET_GETOPT_OPTION_END
268 GNUNET_PROGRAM_run (argc, argv, "gnunet-download [OPTIONS] URI",
270 ("Download files from GNUnet using a GNUnet CHK or LOC URI (gnunet://fs/chk/...)"),
271 options, &run, NULL)) ? ret : 1;
274 /* end of gnunet-download.c */